Full-wave design and optimization of circular waveguide polarizers with elliptical irises

Author

Bertin, Giorgio ; Piovano, Bruno ; Accatino, Luciano ; Mongiardo, Mauro

Author_Institution

Telecom Italia Lab., Turin, Italy

Volume

50

Issue

4

fYear

2002

fDate

4/1/2002 12:00:00 AM

Firstpage

1077

Lastpage

1083

Abstract

We describe the design and optimization of a new polarizer structure realized in circular waveguide with insertion of elliptical irises. The device is compact, showing a considerable reduction in size and weight when compared to previously known realizations. It requires manufacturing by milling techniques only and, since it is composed entirely by waveguides with separable cross sections, it is also well suited for electromagnetic modeling. Measured and theoretical results for a polarizer with a 90°±1° differential phase shift and a return loss better than 35 dB for both polarizations over the operating frequency band confirm the validity of the proposed design

Keywords

circular waveguides; electromagnetic wave polarisation; mode matching; optimisation; waveguide components; waveguide discontinuities; circular waveguide polarizers; differential phase shift; electromagnetic modeling; elliptical irises; full-wave design; hierarchical optimization; milling techniques; mode-matching methods; polarization discriminator; return loss; separable cross sections; size reduction; waveguide discontinuities; weight reduction; Design optimization; Electromagnetic modeling; Electromagnetic wave polarization; Electromagnetic waveguides; Frequency measurement; Loss measurement; Milling; Phase measurement; Virtual manufacturing; Waveguide discontinuities;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.993409

Filename

993409